<template>
  <div class="sona">
    我是sonAAAAAAAAAAA
    <button @click="$bus.$emit('atob',Date.now())">点击传值给sonb</button>
  </div>
</template>
<script>
export default {
}
</script>
<style>
.sona{
    width: 300px;
    height: 300px;
    border: 5px solid red;;
}
</style>
